#304751
Closest named color: Charcoal (#264653). oklch(38.3% 0.033 226.8), rgb(48, 71, 81).
Aa
White text reads best on this color (9.78:1).
About this color
#304751 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.033 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.013 away. White text reads best on it, at 9.78:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #304751 |
| RGB | rgb(48, 71, 81) |
| HSL | hsl(198, 26%, 25%) |
| OKLCH | oklch(38.3% 0.033 226.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #304751 | 9.78:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #304751 | 2.14:1 | Fails | Lc 11.3 | Not readable |
| #304751 text on white | 9.78:1 | AAA | Lc 92.7 | Preferred for body text |
| #304751 text on black | 2.14:1 | Fails | Lc -9.8 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B1C4CD
oklch(80.9% 0.024 227.8)
-
Step 400
400
#87A6B4
oklch(70.7% 0.04 227.1)
-
Step 500
500
#6990A2
oklch(63.1% 0.051 228.2)
-
Step 600
600
#4F7A8D
oklch(55.6% 0.056 227.7)
-
Step 700
700
#406777
oklch(49.1% 0.051 226)
-
Step 800
800
#355461
oklch(42.7% 0.042 226.3)
-
Step 900
900 (this color)
#304751
oklch(38.3% 0.033 226.8)
-
Step 950
950
#1B292E
oklch(27% 0.021 222)
#304751 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #424652 | 0.026 |
| Deuteranopia (no green cones) | #3D4251 | 0.023 |
| Tritanopia (no blue cones) | #244A4A | 0.023 |
| Achromatopsia (no color) | #444444 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304751
#304751
oklch(38.3% 0.033 226.8)
- #523E34
#523E34
oklch(38.3% 0.033 47.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #304751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.013
- Dark Grey Blue #29465B ΔE 0.020
- Dark Slate Gray #2F4F4F ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Teal #014D4E ΔE 0.040
- Onyx #343A40 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.047
- Deep Teal #00555A ΔE 0.049
Use #304751 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.